Creating a Sender Policy Framework (SPF) Record

What is Sender Policy Framework?

Sender Policy Framework is a system for validating the source of e-mails based on the DNS records of the domain from which the e-mail has been sent. It allows verification of the source of the e-mail through the use of a TXT record within the DNS records for the domain.

SPF records can be used to allow third party e-mail servers to send e-mails from a domain with validated authenticity, e.g. If our e-mail server was added to a client’s SPF record then we could send e-mails from that client’s domain.

SPF records are also an additional security feature that makes it less likely that a spammer will try to send e-mails from your domain.